The most important invention of the 20th century On my humble point of view, the most important invention of the 20th century was the computer. It was created by the work of many scientists worldwide. Mathematicians like Alan Turing, who is considered the father of modern computers because he formulated the basic principle of the modern computer; or Charles Babbage, who is the father of mechanical computers. Computers have already spread around the world because of being practical devices. Hence its importance in the application in different areas such as medicine, engineering, and even social science. Furthermore, makes sense remark that without computers it wouldn´t be possible to develop technologies like smartphones, huge datebases, and internet. Turing´s machine has been evoling across the years, and as consequence has been making the world a more united and interconnected place.